We are making a fabric awning for Campers, and now the customer can choose a solid color, or a design pattern. Not both.

Is there a way to select one, and have the other unavailable - or - select one, and the other is not required and won't show in the cart.

I'm using drop down menus due to the large number of Option Values.

And, I realize that having solid colors and patterns together in one drop down solves this, but in our particular case we want them separate.